From: Pavel Machek <pavel@ucw.cz>
To: Zwane Mwaikambo <zwane@linuxpower.ca>
Cc: Andrew Morton <akpm@osdl.org>, Ingo Molnar <mingo@elte.hu>,
Nathan Lynch <nathanl@austin.ibm.com>,
Linux Kernel <linux-kernel@vger.kernel.org>,
Rusty Russell <rusty@rustcorp.com.au>
Subject: Re: [PATCH] i386 CPU hotplug updated for -mm
Date: Mon, 18 Oct 2004 17:10:53 +0200 [thread overview]
Message-ID: <20041018151053.GA23069@elf.ucw.cz> (raw)
In-Reply-To: <Pine.LNX.4.61.0410102302170.2745@musoma.fsmlabs.com>
Hi!
> +#ifdef CONFIG_HOTPLUG_CPU
> +#include <asm/nmi.h>
> +/* We don't actually take CPU down, just spin without interrupts. */
> +static inline void play_dead(void)
> +{
> + /* Ack it */
> + __get_cpu_var(cpu_state) = CPU_DEAD;
> +
> + /* We shouldn't have to disable interrupts while dead, but
> + * some interrupts just don't seem to go away, and this makes
> + * it "work" for testing purposes. */
> + /* Death loop */
> + while (__get_cpu_var(cpu_state) != CPU_UP_PREPARE)
> + cpu_relax();
> +
> + local_irq_disable();
> + __flush_tlb_all();
> + cpu_set(smp_processor_id(), cpu_online_map);
> + enable_APIC_timer();
> + local_irq_enable();
> +}
> +#else
Having real implementation of this one would be very welcome for
suspend-to-{RAM,disk} on smp machines....
Are there really no i386 machines whose hardware supports hotplug?
Pavel
--
People were complaining that M$ turns users into beta-testers...
...jr ghea gurz vagb qrirybcref, naq gurl frrz gb yvxr vg gung jnl!
next prev parent reply other threads:[~2004-10-18 15:16 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-10-01 20:45 [patch 0/5, 2.6.9-rc3] generic irq subsystem, description Ingo Molnar
2004-10-01 20:46 ` [patch 1/5, 2.6.9-rc3] generic irq subsystem, core Ingo Molnar
2004-10-01 20:47 ` [patch 2/5, 2.6.9-rc3] generic irq subsystem, x86 port Ingo Molnar
2004-10-01 20:48 ` [patch 3/5, 2.6.9-rc3] generic irq subsystem, x64 port Ingo Molnar
2004-10-01 20:48 ` [patch 4/5, 2.6.9-rc3] generic irq subsystem, ppc port Ingo Molnar
2004-10-01 20:49 ` [patch 5/5, 2.6.9-rc3] generic irq subsystem, ppc64 port Ingo Molnar
[not found] ` <20041001143332.7e3a5aba.akpm@osdl.org>
[not found] ` <Pine.LNX.4.61.0410091550300.2870@musoma.fsmlabs.com>
2004-10-11 8:19 ` [PATCH] i386 CPU hotplug updated for -mm Zwane Mwaikambo
2004-10-12 5:59 ` Nathan Lynch
2004-10-12 6:04 ` Ingo Molnar
2004-10-12 14:16 ` Nathan Lynch
2004-10-12 14:38 ` Zwane Mwaikambo
2004-10-12 6:23 ` Dave Hansen
2004-10-12 14:47 ` Zwane Mwaikambo
2004-10-18 15:10 ` Pavel Machek [this message]
2004-10-21 14:47 ` Zwane Mwaikambo
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